Has anyone in the list ever tested openMPI in infiniband network in which openSM is running with LASH routing algorithm enabled?
I haven't tested the above case but i could foresee a problem because LASH routing algorithm in openSM uses virtual lanes (VL) which are directly mapped with service levels (SL). And LASH routing algorithm assigns different VLs (SLs) to different paths in the network. This SL <-> path association is available only through the subnet manager (openSM) during connection establishment. But AFAIK, openMPI don't use the services of subnet manager for connection establishment between nodes. So I want to know whether anyone thought about it and working on it or not. regards, Mahesh
